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发明授权
CN106399832B 高强度大线能量焊接用钢板及其制备方法 有权

高强度大线能量焊接用钢板及其制备方法
摘要：
本发明提供一种高强度大线能量焊接用钢板及其制备方法。所述钢板的化学成分按重量百分比为C：0.08～0.10％、Si：0.20～0.30％、Mn：1.35～1.55、P：≤0.015％、S：≤0.010％、Ni：0.20～0.30％，Mo：0.10～0.20％，V：0.04～0.05％，Ti：0.008～0.015％，Alt：0.03～0.04％，稀土Ce：0.0005～0.0015％，余量为Fe和不可避免的杂质。该钢板抗拉强度大于610MPa，满足120KJ/cm以上焊接线能量的高强度调质钢板的需求。该钢板可用于建造大型原油储罐，适用于埋弧焊、气体保护焊、气电立焊等大线能量输入的焊接。
摘要（英）：

The invention provides a high-strength high energy input steel plate for welding and a preparation method thereof. The high-strength high energy input steel plate for welding comprises, by weight, 0.08%-0.10% of C, 0.20%-0.30% of Si, 1.35%-1.55% of Mn, 0.015 % of P or the less, 0.010% of S or the less, 0.20%-0.30% of Ni, 0.10%-0.20% of Mo, 0.04%-0.05% of V, 0.008%-0.015% of Ti, 0.03%-0.04% of Alt, 0.0005%-0.0015% of rare earth Ce and the balance Fe and inevitable impurities. The strength of extension of the high-strength high energy input steel plate is bigger than 610MPa and the strength of extension meets the requirement of a high-strength hardening and tempering steel plate of more than 120 KJ/cm welding energy input. The high-strength high energy input steel plate can be used for manufacturing a large-scale crude oil storage tank and is suitable for high energy input welding, such as submerged-arc welding, gas shielded welding and electro-gas welding.

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